Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Does gamma equal density in Kg/m^3?

  1. May 13, 2016 #1
    I want to use the equation:

    Fr='gamma'*distance from centroid*Area

    but the example is showing density in N/m^3

    while I only have the density in kg/m^3

    Does this mean I have to multiply it by 9.81 to get the right answer?

    Thanks.
     
  2. jcsd
  3. May 13, 2016 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    γ is known as the 'weight density' of a substance. γ = ρ ⋅ g, where ρ is the mass density and g is the acceleration due to gravity.
     
  4. May 14, 2016 #3
    So, pgh is expressed in N/m^3 as opposed to Kg/m^3?
     
  5. May 14, 2016 #4

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    No. Re-read Post #2 again carefully and then work out the units of ρgh versus just ρg.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Does gamma equal density in Kg/m^3?
  1. Gamma rays : shielding (Replies: 3)

  2. Simple equalities (Replies: 1)

Loading...